A. Alkylation of unsaturated
B. Presence of sulphur
C. Oxidation & polymerisation of unsaturated
D. Higher aromatic content
Related Mcqs:
- Gasoline extracted from natural gas (by compression and cooling) is called the ___________ gasoline?
A. Polymer
B. Unleaded
C. Casing head
D. Straight run - Pyrolysis of kerosene or natural gasoline is done to produce mainly the___________________?
A. Olefins and aromatics
B. Lighter paraffins
C. Stabilised gasoline
D. Diesel - “Breathing loss” on storage of gasoline occurs due to the _____________________?
A. Presence of unsaturated air
B. Fluctuation of ambient temperature during day and night
C. Both A. and B.
D. Neither A. nor B. - Which of the following has the highest gum forming tendency in gosoline ?
A. Paraffins
B. Diolefins
C. Aromatics
D. Naphthenes - Which of the following reactions is undesirable in the production of catalytically reformed gasoline ?
A. Dehydrogenation of Naphthene
B. Dehydrogenation of lower paraffins
C. Dehydrocyclization of higher paraffins
D. Isomerisation of paraffins - Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?
A. Paraffins
B. Aromatics
C. Mercaptans
D. Naphthenic acid - Which of the following categories of gasoline has the highest lead susceptibility ?
A. Straight run gasoline
B. Platinum reformed gasoline
C. Catalytical cracked gasoline
D. Polymer gasoline - The amount of tetraethyl lead added to improve the octane number of motor gasoline is around ______________ c.c per gallon of petrol?
A. 3
B. 300
C. 3000
D. 1000 - Flash point of motor gasoline may be around ______________ °C?
A. 10
B. 45
C. 100
D. 150 - Stabilisation of gasoline (petrol) means ___________________?
A. Removal of dissolved gases from it
B. Increasing its oxidation stability
C. Improving its lead susceptibility
D. Increasing its vapour pressure
